Ser Kevan Lannister from "A Song of Ice and Fire".
Title: Ser, Master of Laws, Lord Regent, Protector of the Realm
Allegiance: House Lannister
Born: In 245AL,
Died: In 300AL, at King's Landing
Spouse: Dorna Swyft
The portrait is made by Roman Papsuev also known as "Amok".
He generously allowed me to upload his awesome portraits here and represent him on deviantART (the statement of permission is attached).
You can find more portraits of him in my gallery --> [link]
Kevan Lannister & "A Song of Ice and Fire" © George R. R. Martin
The portrait © Roman Papsuev alias "Amok" [link]